×

TVRD receiver system with automatic bandwidth adjustment

  • US 4,792,993 A
  • Filed: 10/30/1985
  • Issued: 12/20/1988
  • Est. Priority Date: 10/30/1985
  • Status: Expired due to Fees
First Claim
Patent Images

1. In a TVRO receiver for receiving signals broadcast over a plurality of channels with varying bandwidths and having a tuner producing output signals corresponding to selected ones of said received signals and having bandwidths which vary from channel to channel, the improvement comprisingbandpass filtering means receiving said output signals and having a controllably adjustable pass band,bandwidth detecting means for receiving the output signals passing through said filtering means, said detecting means being responsive to a current output signal corresponding to the channel being received for producing a control signal indicative of the extent of deviation of the bandwidth of the current output signal beyond the current pass band of said filtering means, said control signal being substantially independent of the signal level of broadcast signals received by said tuner, andcontrol means responsive to said control signal for adjusting the pass band of said filtering means to accommodate the bandwidth of the current output signal corresponding to the channel being received, if the bandwidth deviation of said current output signal exceeds a predetermined threshold value.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×